Historical Eras

adjective describing something that is bound or surrounded by iron

• The ironbound contract ensured that all parties would fulfill their obligations.
• The ironbound gate was impossible to open without the key.
• That lock is ironbound, you won't be able to pick it.
• Her determination was ironbound, nothing could deter her from reaching her goal.

noun a word that refers to a person, place, thing, event, substance, or quality

adjective a word that describes or modifies a noun or pronoun

article a word that is used to specify or limit a noun

• The Silent Generation, born between 1928 and 1945, experienced significant social and economic changes during their lifetime.
• My grandparents, who are part of The Silent Generation, always tell stories about how things were different when they were growing up.
• The Silent Generation may not have had all the fancy technology we have today, but they sure knew how to have a good time.
• The Silent Generation is like a bridge between the past and the present, connecting different generations with their unique experiences.

noun a geological era that lasted from about 541 to 252 million years ago, characterized by the development of marine life, the first appearance of land plants, and the formation of continents as we know them today

• The Paleozoic era is known for the diversification of life forms and the emergence of complex organisms.
• Back in the Paleozoic days, life was just starting to get interesting.
• The Paleozoic era was when all the cool creatures first showed up.
• Exploring the Paleozoic era is like stepping into a time machine and witnessing the birth of life on Earth.